
* {
    margin: 0;
    padding: 0;
}
.banner {
    margin: 0 auto;
}
.nav {
    width: 100%;
    background-color: rgb(18, 18, 18);
    height: 67px;
    overflow: hidden;
}
.nav-warp {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
}
.nav a {
    color: white;
    text-decoration: none;
    line-height: 67px;
}
.nav-left img{
    margin-top: 15px;
}
.nav-right a {
    color: #a8a8a8;
    padding: 20px;
}
.nav-right a:hover {
    color: white;
}
.nav-right .home {
    color: white;
}
.nav-right span {
    display: none;
}
.content {
    text-align: center;
}
.content-main {
    display: inline-block;
    max-width: 980px;
    width: 100%;
    overflow: hidden;
}
.content-main .content-img1,
.content-main .content-img2,
.content-main .content-img3 {
    position: relative;
}
.content-img1 img,
.content-img3 img {
    width: 588px;
    height: 160px;
    float: left;
}
.content-img2 img {
    width: 588px;
    height: 160px;
    float: right;          
}
.content-txt {
    width: 40%;
    overflow: hidden;
    text-align: left;
    float: left;
}
.content-txt2 {
    width: 40%;
    overflow: hidden;
    text-align: right;
    float: left;
}
.jiange {
    width: 20px;
    height: 160px;
    float: left;
    margin-right: 20px;
    background-color: rgb(176, 176, 176);
}
.jiange2 {
    width: 20px;
    height: 160px;
    float: right;
    margin-left: 20px;
    background-color: rgb(176, 176, 176);
}
.content-txt h2,
.content-txt2 h2,
.content-txt p,
.content-txt2 p {
    padding-top: 10px;
}
.content-img1 #pic1 {
    position: absolute;
    left: 0;
    top: 0;
    display: none;
}
.content-img2 #pic2 {
    position: absolute;
    right: 0;
    top: 160px;
    display: none;
}
.content-img3 #pic3 {
    position: absolute;
    left: 0;
    top: 320px;
    display: none;
}
.footer {
    text-align: center;
    margin-top: 45px;
}
.footer-img a {
    display: inline-block;
    margin: 0 auto;
    text-decoration: none;
    position: relative;
}
.footer-bottom a {
    display: inline-block;
    margin-top: 10px;
    text-align: center;
    position: relative;
}
#img1,
#img2,
#img3,
#img4,
#img5 {
    position: absolute;
    left: 0;
    top: 0;
    margin: 0 auto;
}
#img1:hover,
#img2:hover,
#img3:hover,
#img4:hover,
#img5:hover {
    display: none;
}
.footer-img img {
    width: 25px;
}
.footer-txt {
    margin-top: 30px;
}
.footer-txt h6 {
    text-align: center;
    font-weight: 100;
}

@media screen and (max-width: 1000px) {
    .top,.bottom,.center {
        width: 100%;
        margin: 0 auto;
    }
    .content-img1 img,.content-img2 img,.content-img3 img {
        width: 100%;
    }
    .content-img1 #pic1 {
        position: absolute;
        left: 0;
        top: 0;
        margin: 0 auto;
        display: none;
    }
    .content-img2 #pic2 {
        position: absolute;
        right: 0;
        top: 274px;
        display: none;
    }
    .content-img3 #pic3 {
        position: absolute;
        left: 0;
        top: 548px;
        display: none;
    }
    .jiange {
        display: none;
    }
    .content-txt {
        width: 100%;
        height: 114px;
        text-align: center;
    }
    .content-txt2 {
        width: 100%;
        height: 114px;
        text-align: center;
    }
}

@media screen and (max-width: 900px) {
    .nav-right a {
        display: none;
    }
    .nav {
        position: relative;
    }
    .nav-right span {
        position: absolute;
        top: 16px;
        right: 0;
        width: 39px;
        display: block;
    }
    .content-img1 #pic1 {
        position: absolute;
        left: 0;
        top: 0;
        display: none;
    }
    .content-img2 #pic2 {
        position: absolute;
        right: 0;
        top: 274px;
        display: none;
    }
    .content-img3 #pic3 {
        position: absolute;
        left: 0;
        top: 548px;
        display: none;
    }
    .jiange {
        display: none;
    }
    .content-txt {
        width: 100%;
        height: 114px;
        text-align: center;
    }
    .content-txt2 {
        width: 100%;
        height: 114px;
        text-align: center;
    }
}